Frictionless switching device for opening and closing an electrical line, with improved operating accuracy
US-9818566-B2 · Nov 14, 2017 · US
using spring or other flexible shaft coupling
using spring or other flexible shaft coupling · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H3/38 |
| Official title | using spring or other flexible shaft coupling |
| Display label | using spring or other flexible shaft coupling |
| Total patents | 219 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 24 |
| 2016 | 24 |
| 2017 | 27 |
| 2018 | 19 |
| 2019 | 18 |
| 2020 | 14 |
| 2021 | 16 |
| 2022 | 21 |
| 2023 | 24 |
| 2024 | 12 |
| 2025 | 17 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Interruption apparatus employing actuator having movable engagement element
US-2017221666-A1 · Aug 3, 2017 · US
Electrical switching apparatus and trip assembly therefor
US-9715972-B2 · Jul 25, 2017 · US
Spring operation device of circuit breaker
US-2017207038-A1 · Jul 20, 2017 · US
Instant trip apparatus of molded case circuit breaker
US-9711313-B2 · Jul 18, 2017 · US
Switch
US-9685279-B2 · Jun 20, 2017 · US
Interruption Apparatus Employing Actuator Having Movable Engagement Element
US-2017103860-A1 · Apr 13, 2017 · US
Frictionless switching device for opening and closing an electrical line, with improved operating accuracy
US-2017092452-A1 · Mar 30, 2017 · US
Tap-changer switching system and method of operating same
US-2017062146-A1 · Mar 2, 2017 · US
Moveable contact arm releases latch plate engagement in a circuit breaker
US-9576753-B2 · Feb 21, 2017 · US
Circuit breaker operating mechanism component monitoring system and associated method
US-2017047174-A1 · Feb 16, 2017 · US
Retaining assembly for a circuit breaker contact system
US-9552950-B2 · Jan 24, 2017 · US
Bypass switch
US-9530579-B2 · Dec 27, 2016 · US
Contact system for a circuit breaker
US-2016372277-A1 · Dec 22, 2016 · US
Retaining assembly for a circuit breaker contact system
US-2016365212-A1 · Dec 15, 2016 · US
Rotation transmitting mechanism and lever switch adopting rotation transmitting mechanism
US-2016336129-A1 · Nov 17, 2016 · US
Electrical switching apparatus and trip assembly therefor
US-2016329167-A1 · Nov 10, 2016 · US
Spring operation device for switchgear
US-9431185-B2 · Aug 30, 2016 · US
Electromagnetically enhanced contact separation in a circuit breaker
US-9412549-B2 · Aug 9, 2016 · US
Spring loaded, bistable connect/disconnect for mcc unit
US-2016218491-A1 · Jul 28, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01H3/38?
- CPC H01H3/38 is the Cooperative Patent Classification code for “using spring or other flexible shaft coupling.”
- How many patents are filed under CPC H01H3/38 (using spring or other flexible shaft coupling)?
- Our database includes 219 publications tagged with this CPC code.
- Is patent activity under CPC H01H3/38 growing?
- Publication counts under this code: 12 in 2024 vs 17 in 2025 (latest complete years).